The dependence of quenching on the type of parton that initiates the jet may provide insight into the underlying dynamics. Such a dependence could arise directly from the interaction of the initiating parton with the medium. For example, radiative loss via gluon bremsstrahlung is expected to be larger for jets initiated by gluons than for those from quarks. Furthermore, for heavy quarks, radiation is expected to be suppressed in the direction of propagation [1]}.
A dependence could also arise less directly, via the medium interactions of subleading partons in the shower. For models in which quenching depends on the shower multiplicity, , jewel  [2]}, [3]}, the relatively larger average parton multiplicity of gluon-initiated jets would lead to a larger quenching effect.
